[IPV6]: Remove obsolete declaration in transp_v6.h

include/net/transp_v6.h

@@ -16,7 +16,6 @@ extern struct proto tcpv6_prot;
 struct flowi;
 
 /* extention headers */
-extern void				ipv6_hopopts_init(void);
 extern void				ipv6_rthdr_init(void);
 extern void				ipv6_frag_init(void);
 extern void				ipv6_nodata_init(void);